Wind Pressure Distribution Characteristics on a Typical Stadium Roof

A wind tunnel test of a stadium model was carried out to investigate the wind pressure distribution on the stadium covering.Firstly,the technical parameters used in the test and the basic data processing methods were introduced in detail. Then,the variations of wind pressure at typical measuring points under different wind angles were discussed.Finally,wind pressures of 50 and 100 year return period with 10 min.time average,as well as the top ten extreme pressures based on statistical technique were given.The analysis showed that the distribution of average wind pressure coefficient is disciplinary and it can reveal the distribution of the roof's fluid field.The RMS wind pressure coefficient can reveal the situation of airflow's separation and vortex shedding a certain extent.The up-surface of large-scale stadium roof is mainly loaded by suction,the suction of windward edges and convex parts is comparatively bigger,contrarily that of the other areas is smaller.On the down-surface windward butt edge,there is mainly positive wind pressure distributed and on the down-surface lee area,there is small uniform negative wind pressure distributed.